US20020102179A1 - Malleable magnesium alloy - Google Patents

Malleable magnesium alloy Download PDF

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Publication number
US20020102179A1
US20020102179A1 US09/964,602 US96460201A US2002102179A1 US 20020102179 A1 US20020102179 A1 US 20020102179A1 US 96460201 A US96460201 A US 96460201A US 2002102179 A1 US2002102179 A1 US 2002102179A1
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US
United States
Prior art keywords
magnesium alloy
extrusion
range
speed
less
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US09/964,602
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English (en)
Inventor
Tsutomu Murai
Susumu Miyamoto
Yanao Aso
Yoshinari Oki
Hideo Sano
Seiichi Nagao
Shinichi Matsuoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sankyo Aluminium Industry Co Ltd
Original Assignee
Sankyo Aluminium Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sankyo Aluminium Industry Co Ltd filed Critical Sankyo Aluminium Industry Co Ltd
Assigned to SANKYO ALUMINIUM INDUSTRY CO., LTD. reassignment SANKYO ALUMINIUM INDUSTRY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NAGAO, SEIICHI, SANO, HIDEO, MATSUOKA, SHINICHI, MURAI, TSUTOMU, ASO, YANAO, MIYAMOTO, SUSUMU, OKI, YOSHINARI
Publication of US20020102179A1 publication Critical patent/US20020102179A1/en
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • C22C23/04—Alloys based on magnesium with zinc or cadmium as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon

Definitions

  • the present invention relates to a malleable magnesium alloy, for example, to such an alloy material subjected to flattening such as extrusion or rolling and a structural material for buildings obtained by flattening the alloy material.
  • flattening denotes a process of subjecting a material to pressure or hammering, such as extrusion molding, rolling, press molding or forging, to work the material into a predetermined shape.
  • M1 is an aluminum-zinc alloy prescribed by JIS (Japanese Industrial Standard).
  • JIS Japanese Industrial Standard
  • the M1 alloy contains, besides magnesium, 3.0% by weight of aluminum and 1.0% by weight of zinc.
  • the present invention was created in view of the above circumstances, and an object thereof is to provide a malleable magnesium alloy which can be extruded at a higher molding speed than in the case of conventional magnesium alloys and which has satisfactory mechanical properties and corrosion resistance suitable for use as structural materials.
  • the present invention provides a magnesium alloy containing aluminum in a range of 0.1 wt % to 1.0 wt %, zinc in a range of 0.1 wt % to 2.0 wt %, manganese in a range of 0.1 wt % to 1.0 wt %, 0.04 wt % or less copper, 0.05 wt % or less silicon, 0.005 wt % or less iron, and 0.005 wt % or less nickel.
  • a billet of the malleable magnesium alloy according to the present invention was actually subjected to extrusion molding.
  • the molded article obtained had no cracks even when it was extruded at an extrusion speed about ten times as high as the conventional speed and also no ignition attributable to surface oxidation occurred.
  • a structural material of the magnesium alloy could be extrusion molded at a higher extrusion speed than the conventional speed.
  • the extrusion molded article produced using the malleable magnesium alloy of the present invention is superior to conventional molded articles in physical properties, such as tensile strength, yield strength, elongation percentage and corrosion resistance, as well as in mechanical properties as a lightweight material.
  • the aluminum content is set to fall within the range of 0.1 wt % to 1.0 wt % for the following reasons: If the aluminum content is lower than 0.1 wt %, the resulting molded article fails to show satisfactory mechanical properties as a structural material, and if the aluminum content is higher than 1.0 wt %, it is difficult to extrude the alloy at a higher extrusion speed than the conventional speed.
  • Zinc is contained in the range of 0.1 wt % to 2.0 wt %, because if the zinc content is lower than 0.1 wt %, the corrosion resistance lowers, and if the zinc content is higher than 2.0 wt %, it is difficult to extrude the alloy at a higher extrusion speed than the conventional speed.
  • manganese is contained in the range of 0.1 wt % to 1.0 wt %, because manganese contained in this range serves to enhance the corrosion resistance. If the manganese content is lower than 0.1 wt %, the corrosion resistance greatly lowers, and if the manganese content is higher than 1.0 wt %, it is difficult to extrude the alloy at a higher extrusion speed than the conventional speed.
  • the malleable magnesium alloy according to the present invention contains aluminum in a range of 0.2 wt % to 0.8 wt %, zinc in a range of 0.2 wt % to 1.0 wt %, 0.3 wt % manganese, copper in a range of 0.02 wt % to 0.04 wt %, silicon in a range of 0.02 wt % to 0.03 wt %, 0.004 wt % iron, and 0.001 wt % nickel, the balance being magnesium.
  • Calcium may further be added to enhance flame retardancy.
  • calcium is preferably added in a range of 0.3 to 1.0 wt %.
  • rare earth elements such as yttrium, neodymium and cerium may be added each in an amount of 100 ppm or less by weight, in order to improve the mechanical properties at high temperatures.
  • FIG. 1 is a sectional view of an extrusion molded shape
  • FIG. 2 is a sectional view of another extrusion molded shape with a sectional form different from that shown in FIG. 1.
  • billets of malleable magnesium alloy were prepared which contained aluminum, zinc, manganese, silicon, iron, copper and nickel in respective amounts shown in Table 1 below, the balance (Bal.) being magnesium.
  • the figures shown in Table 1 are in the unit wt %.
  • the billets of Examples 1 to 3 and Comparative Examples 1 to 3 were each extrusion molded into a shape having a sectional form shown in FIG. 1.
  • the extrusion molding was performed at different extrusion speeds, that is, at 5 m/min., 10 m/min., 15 m/min., 30 m/min., 50 m/min. and 70 m/min.
  • the results are shown in Table 2 below.
  • Examples 1 to 3 could be extruded satisfactorily at each of the extrusion speeds (molding speeds) 5 m/min., 10 m/min., 15 m/min., 30 m/min. and 50 m/min. Also, the external appearance was visually inspected and no deterioration in surface properties was observed. Example 1 in particular could be extruded even at a speed of 70 m/min., without entailing deterioration in surface properties. Comparative Examples 1 to 3, by contrast, could be extruded at a speed of 10 m/min. but their surface properties were deteriorated, and at a speed of 15 m/min. or above, the extrusion molding itself could not be carried out because of cracking. Namely, Examples 1 to 3 could be extrusion molded at an extrusion speed more than ten times as high as that of Comparative Examples 1 to 3.
  • Example 1 could be extruded even at a speed of 20 m/min., as seen from Table 3, but Comparative Example 1 cracked at a speed of 5 m/min. and could not be extruded. Also, as seen from the results shown in Tables 2 and 3, it is apparent that in the case of extrusion molding shapes with an identical sectional form, the examples according to the present invention can be extruded at an increased speed more than ten times as high as that of the comparative examples, though the extrusion speed can vary depending upon the sectional form of shapes to be extruded.
  • the tensile strengths of Comparative Examples 1 to 3 greatly lowered with increase in the extrusion speed, as seen from Table 4, but in the case of the examples according to the present invention, the shapes extruded at increased speeds showed tensile strengths nearly equal to those of the shapes extruded at low extrusion speeds.
  • Examples 1 to 3 extruded at the extrusion speed 10 m/min. all had higher tensile strengths than Comparative Examples 1 to 3 extruded at the same speed.
  • a typical tensile strength of A6063 (JIS), which is a malleable aluminum alloy generally used, is 220 MPa, and thus the examples of the present invention are superior to this malleable aluminum alloy in the tensile strength.
  • Examples 1 to 3 were measured as to the 0.2%-yield strength and the elongation percentage, and as a result, the examples had a 0.2%-yield strength of 110 to 130 MPa and showed an elongation percentage of 8 to 12%. Further, to measure the corrosion resistance, the examples were sprayed with salt water containing 5% NaCl for 24 hours, and the reduction in weight due to corrosion was found to be 2 mg/cm 2 /day. These values show that the magnesium alloy according to the present invention has mechanical properties equivalent to or superior to those of the malleable aluminum alloy A6063 (JIS) generally used and can be suitably used as a lightweight structural material.
  • JIS malleable aluminum alloy
  • the molding process to be employed for the malleable magnesium alloy according to the present invention is not limited to extrusion molding, and the magnesium alloy may alternatively be subjected to rolling, press molding or forging. Molded articles obtained by such molding processes also have advantages similar to those of the aforementioned extrusion molded articles.
  • the magnesium alloy of the present invention can be extrusion molded at an extrusion speed higher than the conventional speed.
  • the extrusion molded article is not deteriorated in its surface properties due to cracking or ignition attributable to surface oxidation.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Extrusion Of Metal (AREA)
  • Forging (AREA)
US09/964,602 2000-12-01 2001-09-28 Malleable magnesium alloy Abandoned US20020102179A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-367217 2000-12-01
JP2000367217A JP2002173730A (ja) 2000-12-01 2000-12-01 展伸用マグネシウム合金

Publications (1)

Publication Number Publication Date
US20020102179A1 true US20020102179A1 (en) 2002-08-01

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US09/964,602 Abandoned US20020102179A1 (en) 2000-12-01 2001-09-28 Malleable magnesium alloy

Country Status (8)

Country Link
US (1) US20020102179A1 (de)
JP (1) JP2002173730A (de)
KR (1) KR20020043157A (de)
CN (1) CN1357643A (de)
AU (1) AU6877701A (de)
DE (1) DE10148573A1 (de)
GB (1) GB2369625A (de)
TW (1) TW530094B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050194072A1 (en) * 2004-03-04 2005-09-08 Luo Aihua A. Magnesium wrought alloy having improved extrudability and formability
GB2554793A (en) * 2014-07-28 2018-04-11 Magnesium Elektron Ltd Corrodible downhole article
US10150713B2 (en) 2014-02-21 2018-12-11 Terves, Inc. Fluid activated disintegrating metal system
WO2020150056A1 (en) * 2019-01-18 2020-07-23 Divergent Technologies, Inc. Aluminum alloys
US10760151B2 (en) 2014-04-18 2020-09-01 Terves, Llc Galvanically-active in situ formed particles for controlled rate dissolving tools
EP3572542A4 (de) * 2017-02-28 2020-10-28 National Institute for Materials Science Magnesiumlegierung und verfahren zur herstellung einer magnesiumlegierung
WO2021067182A1 (en) * 2019-09-30 2021-04-08 Ohio State Innovation Foundation Magnesium alloys and methods of making and use thereof

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004115862A (ja) * 2002-09-26 2004-04-15 Toyo Kohan Co Ltd 成形性に優れた展伸用マグネシウム薄板およびその製造方法
CN100363145C (zh) * 2005-05-20 2008-01-23 东北轻合金有限责任公司 镁合金挤压棒材的制造方法
CN101177745B (zh) * 2007-10-16 2010-04-21 中国科学院长春应用化学研究所 一种镁-硅中间体及利用该中间体制备的高镁铝合金及制备方法
CN103060585B (zh) * 2012-12-14 2015-07-08 威瑞泰科技发展(宁波)有限公司 一种Al-Mg-Mn-Cu-Ti铝合金的熔炼方法
CN103388094A (zh) * 2013-07-22 2013-11-13 天津东义镁制品股份有限公司 一种镁合金led日光灯型材及其制造方法
JP6552111B2 (ja) * 2016-03-11 2019-07-31 公益財団法人鉄道総合技術研究所 難燃性マグネシウム合金の押出形材の製造方法
CN109266931A (zh) * 2018-08-23 2019-01-25 江苏理工学院 一种高性能镁合金及其制备方法
CN111235448B (zh) * 2020-01-19 2021-11-23 重庆大学 一种建筑模板用镁合金及其制备方法
CN114574742B (zh) * 2022-02-28 2022-11-01 吉林大学 一种铸轧用耐腐蚀弱织构镁合金及其制备方法
DE102022206662A1 (de) 2022-06-30 2024-01-04 Volkswagen Aktiengesellschaft Hochfeste, aushärtbare Magnesiumlegierung, umfassend Al, Ca, Mn und Y

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE466388A (de) *
GB513627A (en) * 1938-01-14 1939-10-18 Ig Farbenindustrie Ag Improvements in and relating to magnesium alloys
GB690783A (en) * 1950-08-16 1953-04-29 Dow Chemical Co Improvements in making alloy extruded forms by powder metallurgy
GB746545A (en) * 1953-03-18 1956-03-14 Dow Chemical Co Manufacture of magnesium alloy extrusions
GB960027A (en) * 1962-04-27 1964-06-10 Magnesium Elektron Ltd Improvements in or relating to magnesium base alloys
GB974571A (en) * 1962-06-05 1964-11-04 Magnesium Elektron Ltd Improvements in or relating to magnesium base alloys
US3146096A (en) * 1962-11-23 1964-08-25 Dow Chemical Co Weldable high strength magnesium base alloy
WO1995012002A1 (fr) * 1993-10-25 1995-05-04 Vladimir Georgievich Smelikov Alliage a haute resistance

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050194072A1 (en) * 2004-03-04 2005-09-08 Luo Aihua A. Magnesium wrought alloy having improved extrudability and formability
WO2005091863A2 (en) * 2004-03-04 2005-10-06 General Motors Corporation Magnesium wrought alloy having improved extrudability and formability
WO2005091863A3 (en) * 2004-03-04 2006-05-26 Gen Motors Corp Magnesium wrought alloy having improved extrudability and formability
US20080017286A1 (en) * 2004-03-04 2008-01-24 Gm Global Technology Operations, Inc. Methods of extruding magnesium alloys
US7967928B2 (en) 2004-03-04 2011-06-28 GM Global Technologies Operations LLC Methods of extruding magnesium alloys
US10150713B2 (en) 2014-02-21 2018-12-11 Terves, Inc. Fluid activated disintegrating metal system
US11365164B2 (en) 2014-02-21 2022-06-21 Terves, Llc Fluid activated disintegrating metal system
US10760151B2 (en) 2014-04-18 2020-09-01 Terves, Llc Galvanically-active in situ formed particles for controlled rate dissolving tools
GB2554793A (en) * 2014-07-28 2018-04-11 Magnesium Elektron Ltd Corrodible downhole article
GB2554793B (en) * 2014-07-28 2018-12-19 Magnesium Elektron Ltd Corrodible downhole article
US10329643B2 (en) 2014-07-28 2019-06-25 Magnesium Elektron Limited Corrodible downhole article
US10337086B2 (en) 2014-07-28 2019-07-02 Magnesium Elektron Limited Corrodible downhole article
EP3572542A4 (de) * 2017-02-28 2020-10-28 National Institute for Materials Science Magnesiumlegierung und verfahren zur herstellung einer magnesiumlegierung
WO2020150056A1 (en) * 2019-01-18 2020-07-23 Divergent Technologies, Inc. Aluminum alloys
WO2021067182A1 (en) * 2019-09-30 2021-04-08 Ohio State Innovation Foundation Magnesium alloys and methods of making and use thereof

Also Published As

Publication number Publication date
JP2002173730A (ja) 2002-06-21
TW530094B (en) 2003-05-01
KR20020043157A (ko) 2002-06-08
GB0122030D0 (en) 2001-10-31
AU6877701A (en) 2002-06-13
DE10148573A1 (de) 2002-06-13
CN1357643A (zh) 2002-07-10
GB2369625A (en) 2002-06-05

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Owner name: SANKYO ALUMINIUM INDUSTRY CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MURAI, TSUTOMU;MIYAMOTO, SUSUMU;ASO, YANAO;AND OTHERS;REEL/FRAME:012215/0558;SIGNING DATES FROM 20010725 TO 20010806

STCB Information on status: application discontinuation

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